It would seem this is ending in the next issue of Zenon (the same issue Blue Sky Regenesis returns.) From what I understand of the later volume covers and content:
There are parallel characters to the ones we all know: Juza, Toki, Yuda, Souther (as Southern), etc. Parallel Bat and Lin end up following Amiba, and Amiba defeats lots of characters, even the parallel Kenshiro (who is at a disadvantage...)
Interested to see how it ends, honestly. For those who were curious about why Amiba was picked for this: Amiba was sort of an otaku icon in the 80's-90's for the gag related to his appearance in the magazine Fanroad, as he would always maintain the same spot in the list of terms. It's only natural for the otaku icon character to get picked for a work parodying a frequent setting for otaku works these days (otaku fantasy isekai).